Better Party X Xaero's World Map

Evidence

Ran on Kiln's test stand (2026-11-04): BetterPartyXaerosWorldMap did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload; BetterPartyXaerosWorldMapClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Disconnect
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.Context
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndTick
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.Builder
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.client.input.MouseButtonEvent
• net.minecraft.network.RegistryFriendlyByteBuf
• net.minecraft.network.protocol.common.custom.CustomPacketPayload
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.TypeAndCodec
• net.minecraft.server.MinecraftServer
• net.minecraft.server.players.PlayerList
• net.minecraft.util.FormattedCharSequence
• Minecraft.execute()
• Font.plainSubstrByWidth()
• Font.split()
• GuiGraphicsExtractor.pose()
• GuiGraphicsExtractor.text()
• Screen.extractRenderState()
• Screen.mouseClicked()
• Screen.mouseDragged()
• Screen.mouseMoved()
• Screen.mouseReleased()
• Screen.mouseScrolled()

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

Display Better Party members on Xaero's World Map as player heads or colored dots, with party-admin visibility controls and personal client settings.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file better-party-x-xaeros-world-map-fabric-26.3-1.0.2.jar. The scan reads the mod's classes; it does not run them.